Comparison

Deep Tools vs Surface Air Consumption

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Deep Tools

This comprehensive dive toolkit helps recreational, advanced, and technical divers plan dives, log underwater adventures, and blend gases. It offers advanced planning tools, dive computer import, and essential calculations for safe and efficient diving.

Highlights
  • Advanced Deco Planner
  • Dive Log with Shearwater import
  • Gas Blender for Trimix/Nitrox
  • Maximum Operating Depth (MOD) calculator
  • No Decompression Limit (NDL) tracking
  • Metric and Imperial units
Features
Read full description

The Complete Dive Toolkit Deep Tools is a must-have application for recreational, advanced, and technical divers. Whether you are learning to dive, planning complex decompression dives, or logging your underwater adventures, Deep Tools provides reliable tools you can trust. Import dives directly from your Shearwater dive computer, plan dives using the advanced Deco Planner, or use the app as a practical learning aid during your dive training. Tools included:
 - Maximum Operating Depth (MOD) - Oxygen Partial Pressure (ppO₂) - Equivalent Air Depth (EAD) - Equivalent Narcotic Depth (END) - Equivalent Air Density Depth (EADD) - No Decompression Limit (NDL) - Best Trimix for depth - Best Nitrox for depth - Gas consumption and density - Calculator for lifting bag Dive Log: * - Import dives from Shearwater dive computers (Petrel, Perdix, NERD, Teric, etc.) - Log dive sites with name, coordinates, and custom tags - Automatically merge dives with short surface intervals - Share logged dives with your buddies - Create local backups or migrate data to another device Advanced Dive Planner: * Plan complex dives with confidence, whether on Open Circuit (OC) or Rebreather (CCR): - Repetitive dive planning - Bühlmann ZH-L16B and ZH-L16C with Gradient Factors - Gas consumption, CNS, and OTU calculations - Visual dive profile, text plan, pressure graph, and slate view - Lost gas planning - CCR Bailout planning - Multiple point dive plan with custom bailout points - Share dive plans with friends Gas Blender: * Prepare accurate breathing gas mixtures: - Trimix and Nitrox blending - Mix to desired gas - Mix with Top-off gas - Continuous flow blending Additional Features - Metric and Imperial units - Adjustable altitude and water type (EN13319, salt, fresh) - Set your altitude - Custom tank / cylinder database * Advanced features are available with a subscription or during the free trial. Special thanks to V. Paul Gordon, Serge Nelissen and Michael Heus for extensive testing and valuable contributions! Terms of Service: http://www.deepblue.si/privacy/terms-of-service.php

About

Surface Air Consumption

This utility calculates surface air consumption (SAC) rates and air needs at depth using only user-provided dive profile data. It does not compute nitrogen absorption or decompression limits. Always prioritize safety and consult official decompression tables.

Highlights
  • Calculates SAC Rate
  • Estimates air requirements at depth
  • User input based calculations
  • Dive profile analysis
  • Focuses solely on air consumption
Features
Read full description

This software calculates Surface Air Consumption (SAC Rate) and air requirements at depth based on user input data ONLY. This software DOES NOT calculate nitrogen absorption and/or decompression limits. Please see US Navy decompression tables for that information. This software only calculates how much air is required based on user entered data and dive profile. Know your limits and dive within them. Always error on the side of safety. Leridian Dynamics, Inc. assumes no liability for the use and/or misuse of this software.

Screenshots

Deep Tools4 screens
Surface Air Consumption4 screens

Verdict

The call

The clearest difference is review sentiment: Surface Air Consumption at 100% against Deep Tools's 50%. Surface Air Consumption also leads on in-app purchases (none vs 3) and rating (5.0 vs 4.6). Deep Tools's advantage is ratings volume (93 vs 2). On price, ads and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Deep Tools sells 3 in-app purchases, starting at $2.99 per month. Surface Air Consumption asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Surface Air Consumption holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: Deep Tools has 93 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 50% of Deep Tools's written reviews are positive against 100% of Surface Air Consumption's.

UpkeepUpdate frequency

Deep Tools ships an update every 6 weeks, Surface Air Consumption weekly. The most recent releases landed on October 3, 2026 and October 16, 2026 respectively.

Scorecard7 real differences · 3 level
Deep Tools versus Surface Air Consumption: the parameters behind the verdict, then further details
ParameterDeep ToolsSurface Air Consumption
PriceFreeFree
Rating4.6 (93 ratings)5.0 (2 ratings) — better
Positive reviews50.0% of reviews100.0% of reviews — better
Number of ratings93 — better2
Update frequencyEvery 6 weeksWeekly — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFreemiumFree — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.613.6 — better
Further details — not scored
Size12 MB1 MB
Age rating4+4+
DeveloperDeep Blue d.o.o.Leridian Dynamics, Inc.

Customer experience

Deep Tools

All ratings93 ratings
Positive91.4%
Neutral2.2%
Negative6.5%
Written reviews6 reviews
Positive50.0%
Neutral16.7%
Negative33.3%

Surface Air Consumption

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

3 purchases

Deep Tools

Subscriptions2
  • Subscription Monthly$2.991 Month
  • Subscription Yearly3 Days trial$17.991 Year
One-time1
  • Lifetime Subscription$39.99
None

Surface Air Consumption

No in-app purchases

Questions

Is Deep Tools free?
Deep Tools is free to download, with in-app purchases available.
Is Surface Air Consumption free?
Surface Air Consumption is free to download, with no in-app purchases.
Which has better reviews, Deep Tools or Surface Air Consumption?
Surface Air Consumption is rated higher. Deep Tools averages 4.6 out of 5 from 93 ratings, while Surface Air Consumption averages 5.0 from 2 ratings.
Do Deep Tools or Surface Air Consumption have ads?
Neither Deep Tools nor Surface Air Consumption shows ads.
Which is updated more often, Deep Tools or Surface Air Consumption?
Deep Tools ships an update every 6 weeks, and Surface Air Consumption weekly. Most recently, Deep Tools was updated on October 3, 2026 and Surface Air Consumption on October 16, 2026.

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